**American Seal & Packing **

**Stuffing box pressure calculator
**

**Calculated Stuffing Box Pressure**

**BACK VANES • OPEN IMPELLER**

[(Suction pressure + 25‰ of Differential Pressure = Stuffing Box
Pressure]

[Discharge Pressure - Suction Pressure = Differential Pressure]

**Calculated Stuffing Box Pressure**

**BALANCE HOLES • CLOSED IMPELLER**

[(Suction pressure + 10‰ of Differential Pressure = Stuffing Box
Pressure]

[Discharge Pressure - Suction Pressure = Differential Pressure]

**Calculated Stuffing Box Pressure**

**DOUBLE SUCTION**

[Suction Pressure = Stuffing Box Pressure]

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